code: def _get_gcs_client(self) -> luigi.contrib.gcs.GCSClient:
      return luigi.contrib.gcs.GCSClient(
          oauth_credentials=self._load_oauth_credentials()
      )
  
file_path: gokart/gokart/gcs_config.py
imports: import json
  import os
  import luigi
  import luigi.contrib.gcs
  from google.oauth2.service_account import Credentials
label_desc: Use image node_id 2 for calling the GCSConfig obj's underlying member method code with example usage: obj._get_gcs_client() and returns: luigi